Ring-roll mill.



E. B. SYMONS.

RING ROLL MILL. Y APPLICATION FILED APR. 30. |913.

- Patented Feb. 27, 1917.

4 SHEETS-SHEET l.

E. B. SYMONS.

RING ROLL MILL.

E. B. SYMONS.

RING ROLL MILL.

APPLICATION FILED APII. 30. I9I3.

4 SHEETS-SHEET 4.

rammed Feb. 27,1917.

UNITED sTATns PATE OFFTCE.

` EDGAR vB. SYMONS, 0F MILWAUKEE, WISCONSIN.

RING-ROLL MILL.

Specification of Letters Patent.

PatentedFeb. 27, 1917.

Application led April 30, 1913. Serial N o. 764,489.

y grammatically'in the accompanying drawings, whereiny A Figure l is avertical section;

Fig. 2 is ahorizontal section along line 2 2 of Fig. l;

Fig. 3 is a horizontal section along 3-3 of Fig. l; and

Fig. 4y vis ai side elevation with parts broken away and in sectionof aroller cage and supporting and contiguous parts.

Like parts are indicated by the same letters throughout the severalligures.

The base A, adapted to'be supported in the usual manner on a frameworkA1, contains and supports in the center thereof a housing or inner frameA2 supported therefrom by the arms A3, A3 and a tubular cylindricalsupport`A1. The base A is proline `vided with an extension A5"'whichcontains a bearing A6.

The housing or frame A2 contains a bearing A7 in line with the bearingAG. A drive Ashaft A8 is supported in the bearings A6, A7 and is adaptedto be driven from any suitable source of power( transmitted through apulley A9. A miter pinion A1o is keyed to the opposedkend of the driveshaft A8. A plug A11 is screwthreaded into a collar A12 which collar isprovided with a shoulder A12 and isremovably mounted in the wall of theframe or housing A2. A bearing block' A11 is set into the plug A11 inopposition to the end of., the shaftAS.- A set screw A15' is screw?threadedin the plug A11 in opposition to the block A14 and is adaptedvto limit the longitudinal movement of the shaft`As. A lockA nut A16 .isprovided to Ahold vthe 4set screw in position.

Centrally located in and upwardly proiecting from the frame or housingA2 is the lower, central, hollow, bearing hub B. This hub contains aniiiner bearing sleeve B1 provided with a horizontally disposed bearingsurface B2 and a downwardly extending sleeve or collar B3 in which isscrew-threaded a ring B2. On this ring is mounted a bearing plate B5pinned against rotation. A rotatable bearing plate B6 rests upon thebearing surface B2 and rotates thereupon .and is provided with adownwardly projecting, centrally disposed lug B7 to the end of' which ispinned a bearing foo-t B8 in op'- position to the bearing plate B5. Anoil passage B9 leads upwardly fromthe space inthe housing A2 beneath thehub B through the parts B5, B8, B7 and B6. Upon the bearing plate BG andpinned thereto so as to rotate with it is the roller cage which I am(now about to describe. p

This roller cage consists of a base or foot plate C resting upon andpinned to the bearing plate BS and provided about its periphery with thetwo concentric, downwardly depending flanges C1, C2 located one oneither side of a flange C3 extending upwardly from the frame or housingA2. This foot plate has downwardly depending therefrom a collar C1concentric with and surrounding the hub B to which is rigidly attachedthe miter gear C5 in mesh with thel miter pinions A10. A somewhatsimilar head plate C6 is located above and substantially concentric withthe foot plate C, being bound thereto by the three pipes C7. This headplate is provided with an upwardly projecting guide lug or hub C8 whichis A loosely mounted in and `guided by a bearing member subsequently tobe described. iThe head and foot plates together with the pipes whichserve both to bind them together and also as oil .conduits form a rollercage in which the crushing rollers are mounted. The pipes C7 are mountedin the projections lC1 projecting upwardly or downwardly 'as the casemaylbe from the plates C, C6. These proJectio surfaces C1", C11 parallelwith the radii. Guide yokes IC12 are slidably adjustably mounted uponthese surfaces, being held in position and slidable thereon by means ofthe screwthreaded sleeves C11 screw-threaded in the 'supports C9 andcontaining the screws C15 slidably and@z rotatably mounted thereinprovided withDscrew-threaded heads C1 also screw-threaded in thesupports C9.

s or supports have opposed parallel The sleeves C14 have truncatedspherical convex /washer C21 which washer is in en gagement with aplano-concave washer C22 ilo ' in opposition to the opposed side`olf-.the lug C19.- By manipulating the screws, sleeves and nuts theposition of the guide yokes may be adjusted at will, the washerl andscrew being screwed into position separately and ,then jammedl togetherand the lug being then clamped in position with respect to the screw.

These yokes C12 have slidably mounted between them and guided by themthe rectangular bearing blocks D, D7 whose slidable motion in a radialdirection is limited at the outside by the cross member D1 of the yokeand shims D2, D3 which may be placed in front of the cross member. Theseblocks are pressed outwardly against these shims or cross member bymeans of the two springs D1, D5 which are compressed between the bearingblocks D, D7 and the saddle D6. The position of this saddle is adjustedwith respect to the yoke by means -of the long cap screws D70 which areYscrewthreaded in the saddle; thus the pressure of these springs may beadjusted at will. The bearing blocks-D, D7 provide bearings for theroller shaft D2. The lower. bearing blocks D7 form a substantially fiatbearing spot- D9 slidable upon the foot plate C.' The bearing block Dhas' a spherical end D10 in slidable contact with the -head plate C".The shaft. Ds *is supported at its lower end by an end bearing D11. Thebearing block D7 has immediately above it an annular,

truncated, conical' collar D12 and immediately below and in slidable androtatable contactl with the lower end of the bearing i block D a collarD13 having a downwardly depending apron D14. The bearing block D carries-a downwardly projecting eXtension D15 closed at its lo-wer side bythescrewthreaded block D16 whichblock has a sleeve D17 surrounding theshaft and provided with an annular ring D18 in opposition to the apronD11. This projection D1li forms an oiling ring support or housingand isprovided with anv outwardly projecting eX- tension D19 which terminatesat its outer 'end in a pipe \connection D29l which pipe minates in apipe lconnection D22. D23 leads from the pipe .connection D2o the footplate C.

connection is located at the point farthest removed 'from the center ofrotation. The bearing block D7 projects upwardly above thel guide yokeand has an eccentric enlarge- 'ment D21 toform an oil channel leadingbeing substantially smaller at its largest diameter thanthe lower`surface atits smallest diameter. The cylindrical roller 'apron E3 hastwo opposed truncated conical surfaces, one of them E4 of substantiallythe same dimensions as the surface. E1. roller apron thus rests. uponthe surface E1 and is centered. thereupon by a truncated conical weE5having two truncated conical surfaces, ne in .opposition to thesurface E2 and surface E 'of the roller apron E1. The nut E7 is inscrew-threaded engagement with the shaft DS and overlies the wedge' E5and may be rotated to force the wedge E5 downward to clamp the apron inposition. A lock nut E8 is also in screw-threaded engagement with theshaft D8 and adaptedao lock the nut E7 in position. A pipe E9 centrallylocated in the foot plate C and in line with the passage Be leadsupwardly into the center of the hub C8 and is provided at two pointsalong its length with the three-way connections E10 'from-which lead thethree Ypipes E11 which pipes discharge respectively into thehousings`D21 and D11to o1l the respective bearings. A passage E21 leadsradially out from the' conduit E12 which conduit is. in line with and inconnection with the pipe E1o to the oil groove E13` in the outer'wallthehub C2., The flange E11 on the head platel C2 surrounds the fiangeE15 on the bearing sleeve E16 which sleeve surrounds the hub C8, and theoil passage E17 leads from the oil sleeve E18 which is closed by thisflange and surrounds the hub C1i to the pipes C?, thus .completin theoil circuit. The hub Cs'has pinned therein the shaft E19 .on the upperend of which is mounted against .rotation the ldistributing disk E20.

The base A supports the split annular frame F'made up of twosemicircular segments bolted together vby the tie bolts F1, F2.

This frame contains the annular crushing l flange F6 projecting from thering surrounded by the backing material and overlying A 1s generallyupwardly and. outwardly in- -clined so vthat its lower diameter isslightly away from and surrounding the truncated conical `flange D12.This oil channel terthrough the pipe connection D22. flexible ltube D22leads from the pipe connection D22 to the interior of the housing A2through A pipe a portion of the top of the frame. This ring lessthanitsminimum upper diameter and considerably-less than its maximum upperdiameter, owing to the fact that the ring is provided in its upper lialfwith the down- -wardly diminishing channels or grooves F7 whichsubstantially increase its maximum The Shaft D8 carries rigidlyattachedthereon the roller blockE. This roller block has two upwardlydiminishing truncated conical surfaces...E1, E2 the upper surface upperdiameter beyond-its minimum diame- The ter.. It will. be noted thus thatthe distancer between thering and roll slightlyv greater at top than atbottom and thatv this dierence is more marked as between the roll and"between the grooves.

the bottom of the grooves than as between the roll and the surface ofthe dividing lines The housing F8 is supported on the frame F, beingcentered thereon in any suitable manner not shown and heldin position bythe bolts F1. This housing is of substantially larger diameter than thecrushing ring and therefore rests onv the outer extremity of the upperflange F10 of the frame F. Since the crushing ring F3 projects upwardlyabove the top of the frame F, it will be noted that a pocket is providedabout the base in which e material can fall Vand in which it willretained so that any further material falling down into this pocket willdrop upon material already there and will not tend to wear away thehousing or frame F. A shield F11 is mounted in the housing F8, beingsupported therein by the webs F12. This shield has a downwardlyextending apron F13 which shades into parallelism with the inner wall ofthe housing F8 and which assists in inclosing the upper end of theroller cage Vbut terminates short of the top of the crushing ring, thusleaving room for the passage of material. The bearing sleeve E13 issupport.- ed in this shield F11 and being centered therein tends toprevent the roller cage from getting out of alinement.

A feed housing G rests upon the upper wall of the housing F3, is closedby a top G1, and carries a feed hopper G2 which hopper dischargesthrough a spout G3 into an adjustable discharge chute G1 which chutedischarges the material onto the distributing feed plate E20. This chuteG1 is adjusted vertically in position by the bolts G5 an adjustment ofwhich will change the distance between it and the feed plate and thuslimit or control the amount of material fed into the machine. n

The end of the bearing A3 is inclosed by a jacketH which is providedwith an inwardly extending sleeve H1 terminating in an outwardlyprojecting flange H2 which flange is in slidable Contact with a collarH3 on the shaft A8 which collar is provided with an outwardly projectingapron H2. A pipe H5 leads from the lowest point in the housin A2 beneaththe pinions A10'to the jacket A pipe H6 leads from the jacket H to anoil reservoir not shown. The conduit H7 leads from the housing A2surrounding the gear C5 into the interior of the cylindrical passage A2surrounding the shaft A3, and all the oil may be discharged thencethrough the bearings A3, A7 either to the jacket H or back to thehousing A2 adjacent the miter gear A11. A pipe H3 leads from an oil pumpnot shown to the chamber H3 be- .neath the foot bearing B3, and oil maypass thence up through the pipe E10 and the distributing system.

The base A is provided with a hand hole lJ closed by a shutter J1 byremoving which ing F8 is provided with a hand' hole J2V closed by ashutter J 3 whereby access may be had to the upper bearings to adjustthem so that the ordinary working adjustment' may be very easily andconveniently made without dismounting the machine.

It will be evident that, while I have shown in my drawings an operativedevice, still many changes might be made in size, shape and arrangementof parts without departing materially from the spirit of my invention. Iwish, therefore, that my drawings be regarded as in a sensediagrammatic.

The use and operation of\my invention are as follows:

Material to be crushed is fed into the hopper G2 in such quantity as tokeep it, the ychute G3 and the feed spout G4 completely filled at alltimes. This material passes out from the feed spout G4, down over thefeed disk or plate and is by it projected centrifugally down along thesurface of the shield passing out over its outer edge down betweentheapron and the housing, sliding down over the` mass of material which hasmeanwhile become located about the periphery of the crushing ring andthence down through the ring. Since the roller cage is meanwhile beingrotated, being driven as it is by the drive shaft frombelow, thematerial as it falls down across the crushing ring will be exposed to alrapid succession of violent crushing blows by successive rolls as theypass about the ring. The rotational speed of the cage will be such thatanumber of blows will be dealt to each particle during the time which ittakes it to fall freely from` the top to the bottom of the ring. Thematerial will, of course, be arrested and" brought to a full stop byeach blow and will subsequent to such blow fall freely until the nextblow occurs. The friction between the rollersof the cage as they travelabout the surface of the ring and the material being reduced will causethem'to immediately commence to rotate, and before very many rotationsof the cage the rollers will be rotating at such a rate that theirperipheral velocity bears such relation to the peripheral. velocityabout their several axes while traveling along the ring. It will benoted that the two ends of the shaft supporting the roll are both freeto move radially. Thus the roll may assume within reasonable limits anyangular position in a radial plane, the result of this being that themachine will not be damaged by the passage of uncrushable material ormaterial such as nuts, bolts and metal parts which might otherwise dodamage.

The rollers are pressed outwardly by the springs and this prevents anybumpingf the rolls, since it gives a constant outward pressure inaddition to the centrifugal outward force which may vary owing to thepossibility of variations in lspeed. The spring acts merely as areinforcement or a pressure reservoir to minimize the elfect of beadjusted so that their angularity with respect to the ring will begreat. If the material is very hard and a very line product is required,the material fed will, of course,

have to be comparatively small'and the rolls will be placed atl a veryslight angle with respect to the ring and a great number of strokes willbe given to each particle as it falls, and the distance traversed byeachparticle between strokes will be very small and thus the reduction whilegradual will be very complete. The machine, therefore, may be made byadjusting the angle between the roll and ring to give any desiredproduct.

The operation of the oiling system is as follows:

Oil is pumped from the reservoir by a pump, which I have not shown asany pump Will do, into the small central chamber in the housing at thebottom, passes up through the central supporting bearings into andthroughthe .central pipe. From this pipe some of the oil is dischargedthrough the voiling 'conduits and pipes to bearings at the lower ends ofthe roll shafts, some of the oil is discharged to the bearingsfat theupper ends of the roll shafts and the remainder of the oil is dischargedto and through the f loose bearing in which the upper hu'b travels. Theoil which is fed yto the shaft bearings leaves them through thehou-sings D9 and D21 and is discharged through the pipes *D2s and D24back to the housing A2. The oil which is fed to the bearing around thehub C8 passes back through the pipes C7 to the interior of the housingA2 and this oil passes out from the housing A2 either through thesystem.l It will be noted that thus every bearing is kept flooded withoil at all times, and by this oil flood the bearings are protected fromdust and grit and what little dust and grit may get into the;

oil will be immediately washed by the oil away from the bearings andcarried with the oil down to the oil reservoir where it may be easilyand conveniently separated out from\the oil by any suitable means.

The operation of the means for adjusting the tension of the springs andmeans `for adjusting the ends of the`roll shafts radially it is' thoughthasv alreadybeen ade'- quately explained. i

The function of the ball and socket connection between the fianges onthe guide yoke, the holding bolts and sleeves is merely to pneventbinding in case the yoke should not be-absolutely in line and to permitof'rapid Udjustment without necessitatingany very glose attention on thepart of the operator whois, of course, likely to be more or less.

unskilled.

The feed plate as it rotates, of course, is

yfree to throw material in any direction about v the inside of\ thehousing, and it does feed the material ina Isubstantially continuoussheet in all directions down across the shield so'that it frequently isfed from the shield down over and across the crushing ring in asubstantially continuous, thin, annular stream, and it is thiscontinuous, thin, anhular stream thatthe rolls pass over as theyrotate-and are carried along the ring surface. Thus the material beingacted upon by the roll at any one time is vsubstantially littleY inamount and is never banked up on thering so that no power is lost i-npacking material which subsequently merely acts as a shield for materialto be crushed.

The only wearing parts are the crushing ring and the jackets on thecrushing rolls and these may be convenientll removed. To remove thecrushlng ring 1 1s only necessary to remove the upper housing and breakopen the Split frame ring to free it from the crushing ring. The ringcan then be removed. If any dii'culty is discovered the soft backing maybe cut awaylo'r meltedv away as the case may be thus completely freeingthe parts without difficulty. The jacket on the roll may be removed bybacking off the two nuts, namely, the lock nut and the holding nut whichare screw-threaded on the roll shaft. This will permit the ring wedge tobe freed and then*t he jacket itself may be removed from the core.

The notches or grooves or transverse channels in the upper portion ofthe crushing ring have inclined surfaces, thus forming what is ineffect, two separate-zones, one

made up of crushing surfaces'sharply inclined, the other zone below madeup of the smooth, gradually inclined space of the ring less sharplyinclined. The transverse channels of course act as holding surfaces tohold the material as it is fed into the machine, and the pockets aroundthe top also assist in overcoming any spiral movement of the ma# terial.

I claim:

1. In a crushing machine a roller-cage containing crushing rollers, asupport bearing at the bottom of said cage upon and about which itrotates, means for rotating it and a guide bearingnormallylout ofcontact with the cage at the top.

2. In a crushing machine the combination with a rotatable shaft of acore mounted thereon, said core having a pair of upwardly diminishingtruncated conical surfaces, an annular member supported on the lowerlarger surface, a wedge, collar having truncated conical surfaces inengagement with one of the surfaces onypsaid core and lin engagementwith the member and means for forcing said wedge into said member tolock it in position on the core.

3." A rotary member comprising a cylindrical annular member having ateither end truncated conical surfaces, a core upon which said annularmember is mounted, said core having one truncated conical surface inengagement with one surface on the annular member and a second truncatedconical surface of lesser diameter than the remaining surface on theinterior of the annular mem; ber and means for locking said core andsaid member together.

4. A rotary member comprising a cylindrical annular member having ateither end truncated conical surfaces, a core upon which said annularmember is mounted, said core having one truncated conical surface inengagement with one surface on the roller and a second truncated conicalsurface of lesser diameter than the remaining surface on the interior ofthe annular member and means for locking said core and said membertogether, said means comprising an annular wedge.

5. A rotary member comprising a cylindrical annular member having ateither end truncated conical surfaces, a core upon which said annularmember is mounted, said core having one truncated conical surface inengagement with one surface on the roller and a second truncated conicalsurface of lesser diameter than the remaining surface on the interior ofthe annular member, means for locking said core and said membertogether, said means comprising an annular wedge and means for forcingsaid Wedge into the p space between the core and jacket.

6. A rotary member for crushing Inachines comprismg a shaft, a corethereon,

downwardly diminishing in cross section.

an annular member resting upon said core, conical surfaces upon saidcore and said annular member, and an annular wedge and means for forcingit into the space between said core and said member to lock themtogether. f

7. In a rinfr roll crushing machine the combination o a horizontalcrushing ring with an upright roll traveling therein and therealong saidring surface provided with a series of transverse material holdingchannels downwardly diminishing in cross section.

8. In a ring roll crushing machine thel combination of a horizontalcrushing ring 8o with an upright roll traveling therein and therealongsaid ring divided into crushing zones one above the other and oneprovided with depressions to receive and hold the material.

9. In a ring roll crushing machine the combination of a horizontalvcrushing ring with an upright roll ltraveling therein and therealongsaid ring divided into crushing zones one above the other and oneprovided with a series of transverse channels to ree ceive and hold thematerial.

10. In a ring roll crushing machine the combination of a horizontalcrushing lring with an Aupright roll traveling therein and '95therealong said ring .divided into crushing zones one above the otherand one provided with a series of transverse channelsfto receive andhold the material, said channelsv 11. In a ring roll crushing machinethe combination of ahorizontal crushing ring with an upright rolltraveling therein and therealong-said ring divided into crushlng zonesone above the other and one provided 4105 with a series of transversechannels to re. ceive and hold the material saidv channels lformed withcurved surfaces.

12. In a ring roll crushing machine the with'an upright roll travelingtherein and therealo'ng said ring divided into crushmg zones one 'abovethe other and one prov1ded With a series-.of transverse channelsinclined to the vvertical 'to receive and hold the ma- 115 terial.

13. In a ring roll crushing machine the combination of a horizontalcrushing rmg with an upright roll traveling therein and therealong saidring divided into crushing zones one above the other and one p rovidedwith a series of transverse channels inclined to the vertical to receiveand hold the material said channels downwardly d1rn1n1shing in crosssection.

14. In a ring vroll crushing machme the combination of a horizontalcrushing rmg with an upright roll traveling therein and therealong saidring divided into crushing zones one abovel the other and one provided130 with a series of transverse channels inclined to the vertical toreceive and hold the material said channels formed with curved surfaces.

15. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong theopposed surfaces of said ring and roll being upwardly diverging and thering surface provided with depressions to receive and hold the material.

16. In a ring roll crushing machine the combination of a horizontalcrushing rin-g with an upright roll traveling therein and therealong theopposed surfaces of said ring and roll being upwardly diverging and thering surface provided with a series of transverse channels to receiveand hold the material.

17. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong theopposed surfaces of said ring and roll being upwardly diverging and thering surface provided with a series of transverse channels to receiveand hold the ma- 18. In a rin roll crushing machine the combination o ahorizontal crushing ring with an upright roll traveling therein andtherealong the opposed surfaces of said ring and roll being upwardlydiverging and the ring surface provided with a seriesof transversechannels to receive and hold the material vsuch channels formed withcurved surfaces.

19. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and y therealongthe opposed surfaces of said ring and roll being upwardly diverging andthe ring surface provided with a series of transverse channels inclinedto thevertical to receive and hold the material.

20. In a ring roll crushing machine the combination of ahorizontalcrushing ring with an upright roll traveling therein andtherealong the ring surface divided into zones one above the other theopposed surface of said ring and roll being upwardly ydiverging and onezone of the ringsurface provided with depressions to recelve and holdthe material.

21. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong thering surface divided into zones one above the other the opposed surfacesof said ring and roll being upwardly diverging and one zone of the ringsurface provided with a series of transverse channels to receive andhold the material.

22. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling, therein and therealong thering surface divided into zones one above the other the opposed surfacesof said ring and'roll being upwardly diverging and one zone of the ringsurface provided with a series of transverse channels to receive andhold the material said chanf nels downwardly diminishing in crosssection.

23. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong thering surface divided into zones one above the other the opposed surfacesof said ring and roll being upwardly diverging and one zone of the ringsurface provided with a series of,transverse 'channels to receive andhold the material said channels formed with curved surfaces.

24. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong thering surface l divided into zones one above the other the opposedsurfaces of said ring and roll being upwardly diverging and one zone ofthe ring surface terial such channels downwardly diminishing in crosssection.

'roll revolving therein and therealong and means for feeding a film .ofmaterial to the ring surface so that the roll engages a film ofcontinuously moving material the crushing surface of the ring providedwith depressions for holding the material.

26. In a ring roll crushing machine theV combination of ahorizontalcrushing ring having a surface across which the material isfree to slide continuously with an upright roll revolving therein andtherealong and means for feeding a film of material to the ring surfaceso that the roll engages a film of continuously moving material thecrushing surface of the ring provided with transverse holding channels.

27. In a ring roll crushing machine the combination of a horizontalcrushing ring having a surface across which the material is free toslide continuously with an upright roll revolving therein and therealongand means for feeding a film of material to Ithe ringsurface so that theroll engages a film of continuously moving material the crushing surfaceof the ring provided with means for feeding a film of material to thering surface so that the roll engages a film of continuously movingmaterial the crushing surface of the ring provided with transversleholding channels inclined to the vertica 29. In a ring roll crushingmachine the combination of a horizontal crushing ring having a surfaceacross which the materia-l is free to slide continuously with an uprightroll revolving therein and therealong and means for feeding a film ofmaterial to the ring surface so that the roll engages a film ofcontinuously moving material the crushing surface of the ring providedwith transverse holding channels formed with curved surfaces.

30. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong andfeed pockets radially disposed about the top of the ring.

31. In a ring roll crushing machine the combination ofl a horizontalcrushing ring with an upright roll traveling therein and therealong saidring surface provided with a series of transverse channels ,to receiveand hold the material `and feed pockets radially disposed in registerwith said transverse channels;

32. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong andfeed pockets radially disposed about the top of the ring and centrifugalmeans for discharging the material into said pockets.

33. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong saidring surface provided 4with a series of transverse channels to receiveand hold the materiall and feed pockets radially disposed in registerwith said ltransverse channels and centrifugal means for discharging thematerial into said pockets.

34. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright rolll traveling thereinand therealong anda collar located above said ring and having inwardly extending radiallydisposed partitions projecting'there-` from above the ring to formpockets', and centrifugal means for discharging the Inaterial into saidpockets.u

35.*In a ring roll crushing machine theI combination of a horizontalcrushin ring with an upright roll traveling therein Vand therealong andmeans for feeding by centrifugal force a `film of ma rial toward theupper edge of the ring and radial plates about the upper edge of thering to stop the Spiral motion of the material and direct its particlesdownwardly.

36. In a ring roll crushing machine the (a combination of a horizontalcrushin ring with an upright roll traveling thereln and therealong 'andfeed pockets radially disposed about the top of the ring and means fordistributing material in substantially equal quantities to said feedpockets.

37. In a ring roll crushing machine`the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong andfeed pockets radially disposed about the top of the ring and meanscomprising a radial disk and fixed conical feed apron for distributingmaterial to all of said pockets.

38. In a ring roll crushing machine the combination of a horizontalcrushing ring with an upright roll traveling therein and therealong acylindrical housing for said ring open at the top and a conical feedingapron within said housing 'adapted to dis- 85 charge materialperipherally adjacent to the wall thereof and a part provided with feedpockets located beneath said apron and discharging into said ring.

.39. In a ring roll crushing machine the 90 combination of a horizontalcrushing ring with an upright roll traveling therein and therealong anda feed device to feed a continuous cylindrical film of material betweentheir opposed crushing surfaces an open chamber and a discharge wayleading there from below the ring and means for simultaneously causingthe roll to travel around the ring to move toward the ring and to rotateon its own aXis said ring provided with holding surfaces to receive thematerial.

410. In a ring roll crushing machine the combination of a horizontalcrushing' ring with an upright roll traveling therein and therealong anda feed device to feed a conv tinuous cylindrical 'film of materialbetween their opposed crushing surfaces "an open chamber and a dischargeway leading therefrom below the ring and' means for 110 simultaneouslycausing the roll to travel around the ring to move toward the ring andto rotate on its own axis said feeding device containing a centrifugalfeeder plate and said ring provided with distributing pockets. 1.15

F. A. OTTO,

FLORA REINHoLDg

